Calculates a secure hash of a field for storing in the event. See
hashMatch() on how to search for events using hashes.
Bits can reduce the width of the output if desired to keep the resulting
strings short.
Function Traits: Transformation
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
as | string | optional | The name of output field, defaults to the input field. | |
bits | integer | optional | 256 | Hash algorithm output bits to keep. Must be a multiple of 8. |
| Minimum | 8 | |||
| Maximum | 512 | |||
field[a] | string | required | The name of the field to hash. | |
hash | string | optional | sha256 | Hash algorithm. |
| Valid Values | sha256 | |||
sha512 | ||||
replaceInRawstring | boolean | optional | Replace all substrings in @rawstring that has the input value with the hash too. | |
salt | string | required | The name of the secret salt to use. | |
The parameter name for field can be omitted; the following forms are equivalent:
logscale
hashRewrite("value")and:
logscale
hashRewrite(field="value")hashRewrite() Examples
Replace the value in the ssn field with the hash of the existing value, also replacing it in @rawstring
logscale
hashRewrite(ssn, salt="salt1")